Carbon-13 NMR study of poly(alpha-methylstyrene)

Nuclear magnetic resonance spectroscopy (NMR) in solution and solid state w as applied to obtain response of the chemical behaviour of commercial poly( alpha-methylstyrene) (PAMS). From solution measurements it was possible to determine the microstructure of this amorphous homopolymer. The solid state NMR investigation showed that the CPMAS C-13 routine spectrum allowed us t o obtain information on the polymer microstructure and also evaluate the do main mobilities. The variation contact time and the proton spin-lattice rel axation time were determinant factors to evaluate the dynamic molecular mot ion. (C) 2001 Published by Elsevier Science Ltd.